Some crimes are so shocking. They don't just make headlines. They forever change our society.

I'm Katie Ring, host of America's most infamous crimes. Each week, I take on one of the most

notorious criminal cases. Each case unfolds across multiple episodes, release every Tuesday

through Thursday, from the first time that something was wrong, to the moment the truth came out or didn't.

Listen to and follow America's most infamous crimes on Apple Podcasts, Spotify, Amazon Music, or wherever you listen to your podcasts.

Step into the 2020 True Crime Vault, where each story is unforgettable.

Thank you. where each story is unforgettable. How many years had your daughter's been missing when you met each other? I believe about two years.

Rob McLeod and Bob Markham are part of a club that nobody wants to join.

Fathers of adult women who have gone missing.

So these two still grieving fathers join forces to find their daughters.

I was really losing hope that she was going to show up on her own.

That's when they told me that there were more than Casey.

There were other people missing.

Describe Jennifer Markham, 25 years old, a single mom?

She was.

Lived here in Denver.

She lived about 20 miles south of where Casey disappeared.

He looks Markham and his wife in the eye and says your daughter is dead, and I know where she's buried.

I had a chill run down my spine, and I couldn't.

Did you really, really, really know how my daughter died?

At this point, we knew we had a serial killer on our hands. But has he tried to kill before?

I remember screaming, stop the car.

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